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| DG381A/384A/387A/390A Vishay Siliconix CMOS Analog Switches FEATURES D D D D BENEFITS APPLICATIONS D Low Level Switching Circuits D Programmable Gain Amplifiers D Portable and Battery Powered Sytems D Full Rail-to-Rail Analog Signal Range "15-V Input Range D Minimizes Signal Error Low rDS(on): 30 W D Low Power Dissipation Single Supply Operation Pin and Function Compatible with the JFET DG180 Family DESCRIPTION The DG381A-DG390A series of monolithic CMOS analog switches was designed for applications in instrumentation, communications, and process control. This series is suited for applications requiring fast switching and nearly flat on-resistance over the entire voltage range. for battery powered applications, without sacrificing switching speed. Break-before-make switching action is guaranteed, and an epitaxial layer prevents latchup. Single supply operation is allowed by connecting the V- rail to 0 V. Designed on Vishay Siliconix' PLUS-40 CMOS process, these devices achieve low power consumption (3.5 mW typical) and excellent on/off switch performance. These switches are ideal Each switch conducts equally well in both directions when on, and blocks up to the supply voltage when off. These switches are CMOS and quasi TTL logic compatible. FUNCTIONAL BLOCK DIAGRAM AND PIN CONFIGURATION DG381A Dual-In-Line S1 D1 NC NC IN1 V+ NC 1 2 3 4 5 6 7 14 13 12 11 10 9 8 S2 D2 NC NC IN2 V- GND TRUTH TABLE Logic 0 1 Logic "0" v 0.8 V Logic "1" w 4 V Switch ON OFF Top View Document Number: 70048 S-00399--Rev. D, 13-Sep-99 www.vishay.com S FaxBack 408-970-5600 4-1 DG381A/384A/387A/390A Vishay Siliconix FUNCTIONAL BLOCK DIAGRAM AND PIN CONFIGURATION DG384A Dual-In-Line D1 NC D3 S3 S4 D4 NC D2 S1 IN1 V- GND NC V+ IN2 S2 1 2 3 4 5 6 7 8 Top View 16 15 14 13 12 11 10 9 TRUTH TABLE Logic 0 1 Logic "0" v 0.8 V Logic "1" w 4 V Switch OFF ON DG387A Dual-In-Line DG387A Metal Can NC NC D1 S1 IN V+ NC 1 2 3 4 5 6 7 14 13 12 11 10 9 8 NC NC D2 S2 NC V- GND IN 3 4 V+ (Substrate and Case) S1 2 D1 D2 S2 9 NC 8 7 6 5 NC GND 10 1 V- Top View Top View TRUTH TABLE Logic 0 1 SW1 ON OFF Logic "0" v 0.8 V Logic "1" w 4 V SW2 OFF ON www.vishay.com S FaxBack 408-970-5600 4-2 Document Number: 70048 S-00399--Rev. D, 13-Sep-99 DG381A/384A/387A/390A Vishay Siliconix FUNCTIONAL BLOCK DIAGRAM AND PIN CONFIGURATION DG390A Dual-In-Line D1 NC D3 S3 S4 D4 NC D2 S1 IN1 V- GND NC V+ IN2 S2 1 2 3 4 5 6 7 8 Top View 16 15 14 13 12 11 10 9 TRUTH TABLE Logic 0 1 SW1, SW2 OFF ON Logic "0" v 0.8 V Logic "1" w 4 V SW3, SW4 ON OFF ORDERING INFORMATION Temp Range Package Part Number DG381A 0 to 70_C -55 to 125_C 14-Pin Plastic DIP 14-Pin CerDIP DG381ACJ DG381AAK/883 DG384A 0 to 70_C -55 to 125_C 16-Pin Plastic DIP 16-Pin CerDIP DG384ACJ DG384AAK/883, 5962-9678801QEA DG387A 0 to 70_C -55 to 125_C 14-Pin Plastic DIP 14-Pin CerDIP 10-Pin Metal Can DG387ACJ DG387AAK/883 DG387AAA/883 DG390A 0 to 70_C -25 to 85_C -55 to 125_C 16-Pin CerDIP 16 Pi C DIP 16-Pin Plastic DIP DG390ACJ DG390ABK DG390AAK DG390AAK/883 Document Number: 70048 S-00399--Rev. D, 13-Sep-99 www.vishay.com S FaxBack 408-970-5600 4-3 DG381A/384A/387A/390A Vishay Siliconix ABSOLUTE MAXIMUM RATINGS Voltages Referenced to V- V+ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44 V GND . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25 V Digital Inputsa, VS, VD . . . . . . . . . . . . . . . . . . . . . . . . . (V-) -2 V to (V+) +2V or 30 mA, whichever occurs first Current, Any Terminal Except S or D . . . . . . . . . . . . . . . . . . . . . . . . . . . 30 mA Continuous Current, S or D . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30 mA (Pulsed at 1 ms, 10% duty cycle max) . . . . . . . . . . . . . . . . . . . . . . . . . 100 mA Storage Temperature (AAA, AAK, ACK Suffix) . . . . . . -65 to 150_C (ACJ Suffix) . . . . . . . . . . . . . . . . . -65 to 125_C Power Dissipationb 14-Pin Plastic DIPd . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 470 mW 14-Pin CerDIPc . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 825 mW 10-Pin Metal Cane . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 450 mW Notes: a. Signals on SX, DX, or INX exceeding V+ or V- will be clamped by internal diodes. Limit forward diode current to maximum current ratings. b. All leads welded or soldered to PC Board. c. Derate 11 mW/_C above 75_C d. Derate 6.5 mW/_C above 25_C e. Derate 6 mW/_C above 75_C SCHEMATIC DIAGRAM (TYPICAL CHANNEL) V+ S V- VIN Level Shift/ Drive V+ GND D V- FIGURE 1. www.vishay.com S FaxBack 408-970-5600 4-4 Document Number: 70048 S-00399--Rev. D, 13-Sep-99 DG381A/384A/387A/390A Vishay Siliconix SPECIFICATIONSa Test Conditions Unless Specified Parameter P Analog Switch Analog Signal Rangee Drain-Source On-Resistance Source Off Leakage Current Drain Off Leakage Current Drain On Leakage Current VANALOG rDS(on) IS(off) ID(off) ID(on) VD = "10 V, IS = -10 mA VS = "14 V, VD = #14 V VS = "14 V, VD = #14 V VD = VS = "14 V Full Room Full Room Hot Room Hot Room Hot 30 "0.1 "0.1 "0.1 -1 -100 -1 -100 -11 -100 -15 15 50 75 1 100 1 100 1 100 -5 -100 -5 -100 -5 -100 -15 15 50 75 5 100 5 100 5 100 nA A V W B, C Suffix A Suffix -55 to 125_C 0 to 70_C -25 to 85_C Symbol S bl V+ = 15 V, V = -15 V V V- 15 VIN = 0.8 V or 4 Vf Tempb T Typ Tc Mind Maxd Mind Maxd Unit Ui Digital Control Input Current with p Input V lt I t Voltage High Hi h Input Current with Input Voltage Low VIN = 5 V IINH VIN = 15 V IINL VIN = 0 V Room Full Room Full Room Full -0.001 0.001 -0.001 -1 -1 -1 -1 1 1 -1 -1 1 mA A Dynamic Characteristics Turn-On Time Turn-Off Time Break-Before-Make Time Charge Injection Source-Off Capacitance Drain-Off Capacitance Channel-On Capacitance Input Capacitance Off-Isolation Crosstalk (Channel-to-Channel) tON tOFF tOPEN Q CS(off) CD(off) CD(on) CIN OIRR XTALK f = 1 MHz VIN = 0 V VIN = 15 V f = 1 MHz; VS , VD = 0 V MH See Figure 2 See Figure 3 CL = 0.01 mF, Rgen = 0 W Vgen = 0 V Room Room Room Room Room Room Room Room Room Room Room 150 130 50 10 14 14 40 6 7 62 74 dB pF F pC 300 250 ns VIN = 0 V, RL = 1 kW VS = 1 Vrms, f = 500 kHz Power Supplies Positive Supply Current Negative Supply Current Positive Supply Current Negative Supply Current I+ I- I+ VIN = 0.8 V (All Inputs) I- VIN = 4 V ( (One Input) p) (All Oth Others = 0) Room Full Room Full Room Full Room Full 0.23 -10 -100 10 100 -10 -100 -100 0.5 1.0 -100 100 mA A 1 mA -0.001 0.001 -0.001 Notes: a. Refer to PROCESS OPTION FLOWCHART. b. Room = 25_C, Full = as determined by the operating temperature suffix. c. Typical values are for DESIGN AID ONLY, not guaranteed nor subject to production testing. d. The algebraic convention whereby the most negative value is a minimum and the most positive a maximum, is used in this data sheet. e. Guaranteed by design, not subject to production test. f. VIN = input voltage to perform proper function. Document Number: 70048 S-00399--Rev. D, 13-Sep-99 www.vishay.com S FaxBack 408-970-5600 4-5 DG381A/384A/387A/390A Vishay Siliconix TYPICAL CHARACTERISTICS (25_C UNLESS NOTED) rDS(on) vs. VD and Power Supply 100 W) TA = 25_C 80 "5 V 60 "7.5 V 40 "10 V "15 V 20 "20 V W) 60 V+ = 15 V V- = -15 V 50 rDS(on) vs. VD and Temperature r DS(on) Drain-Source On-Resistance ( - r DS(on) Drain-Source On-Resistance ( - 40 125_C 30 25_C 20 -55_C 10 -15 -10 -5 0 5 10 15 0 -20 -15 -10 -5 0 5 10 15 20 VD - Drain Voltage (V) VD - Drain Voltage (V) Charge Injection vs. Analog Voltage (VS) 50 V+ = 15 V V- = -15 V CL = 1 nF 500 Switching Time and Break-Before-Make Time vs. Positive Supply Voltage V- = -15 V TA = 25_C VINH = 4 V VINL = 0 V tOFF 300 40 400 t ON , t OFF (ns) 30 Q (pC) 20 200 tON 10 100 tOPEN DG301/303 Only 0 -15 -10 -5 0 5 10 15 0 0 5 10 15 VS - Source Voltage (V) V+ - Positive Supply Voltage (V) Input Switching Threshold vs. Positive Supply Voltage 5 V- = 0 to -15V TA = 25_C 4 400 500 Supply Current vs. Temperature 300 3 V T (V) I+, I- ( A) V+ = 15 V V- = -15 V VIN = 4 V (One Input) (All Other = 0 V) I+ 200 2 1 0 V+ - Positive Supply Voltage (V) www.vishay.com S FaxBack 408-970-5600 4-6 CCCCCCCCC CCCCCCCCC CCCCCCCCC 5 10 15 100 I- 0 -100 -55 -35 -15 5 25 45 65 85 105 125 Temperature (_C) Document Number: 70048 S-00399--Rev. D, 13-Sep-99 DG381A/384A/387A/390A Vishay Siliconix TYPICAL CHARACTERISTICS (25_C UNLESS NOTED) Off Isolation and Crosstalk vs. Frequency 120 15 V+ = 15 V V- = -15 V 100 Crosstalk 10 I+, I- (mA) 80 (dB) Off Isolation 60 V+ = 15 V V- = -15 V RL= 50 W 0 100 k 1M 10 M 1k 10 k 100 k 1M f - Frequency (Hz) f - Frequency (Hz) Supply Curents vs. Switching Frequency 5 +I 40 -I 20 10 k Leakage vs. Temperature 100 nA V+ = 15 V V- = -15 V VS, VD = "14 V 400 350 300 t ON t OFF (ns) , 250 200 150 100 50 10 pA -55 -35 0 -15 5 25 45 65 85 105 125 10 Switching Time vs. Power Supply Voltage V+ = 15 V V- = -15 V 10 nA I S, I D Current ID(on) 1 nA tON tOFF 100 pA ID(off) or IS(off) 12 14 16 18 20 22 Temperature (_C) V+, V- Positive and Negative Supplies (V) Switching Time vs. Temperature V+ = 15 V V- = -15 V VS = 3 V W) 400 350 300 t ON t OFF (ns) , 250 200 150 100 50 0 -55 -35 -15 5 25 45 65 85 105 125 Temperature (_C) tOFF tON 170 150 130 110 90 70 50 30 10 rDS(on) vs. Analog and Positive Supply Voltage V- = 0 V TA = 25_C V+ = 5 V r DS(on) Drain-Source On-Resistance ( - V+ = 10 V V+ = 15 V 0 2 4 6 8 10 12 14 V+, V- Positive and Negative Supplies (V) Document Number: 70048 S-00399--Rev. D, 13-Sep-99 www.vishay.com S FaxBack 408-970-5600 4-7 DG381A/384A/387A/390A Vishay Siliconix TEST CIRCUITS +15 V Logic "1" = Switch On V+ VS = 3 V S IN 5V GND V- RL 300 W CL 33 pF VS 90% 10% 0V -15 V CL (includes fixture and stray capacitance) VO = VS RL RL + rDS(on) Switch Output tON tOFF D VO Logic Input 0V 50% VINH FIGURE 2. Switching Time +15 V Logic Input D1 D2 VO2 VO1 Switch Output RL1 300 W RL2 300 W CL2 33 pF CL1 33 pF 0V VS1 VO1 0V VS2 Switch Output VO2 50% 0V tBBM 50% Logic "1" = Switch On VINH 50% V+ VS1 = 3 V VS2 = 3 V S1 S2 IN GND V- -15 V CL (includes fixture and stray capacitance) FIGURE 3. Break-Before-Make SPDT (DG301A, DG303A) +15 V Rg V+ S IN D CL 1 nF V- VO VO DVO Vg 5V INX ON OFF ON GND -15 V FIGURE 4. Charge Injection www.vishay.com S FaxBack 408-970-5600 4-8 Document Number: 70048 S-00399--Rev. D, 13-Sep-99 DG381A/384A/387A/390A Vishay Siliconix APPLICATIONS The DG381A series of analog switches will switch positive analog signals while using a single positive supply. This allows their use in applications where only one supply is available. The trade-offs or performance given up while using single supplies are: 1) increased rDS(on), 2) slower switching speed. Typical curves for aid in designing with single supplies are supplied (see Typical Characteristics). The analog voltage should not go above or below the supply voltages which in single operation are V+ and 0 V. In the integrator of Figure 4, RD controls the discharge rate of the capacitor so that the pulsed or continuous current ratings are not exceeded. During reset SW1 is closed and SW2 is open. Opening SW2 with SW1 also open will hold the integrator output at its present value. SW1 RD C Reset VIN Start/Stop SW2 R - V O + RC 1 V IN * dt DG381A R + FIGURE 5. Integrator with Reset and Start/Stop Document Number: 70048 S-00399--Rev. D, 13-Sep-99 www.vishay.com S FaxBack 408-970-5600 4-9 |
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